12th Ave NW Basin Drainage Improvement Project November Update
Project Update, November 2022
Hello Broadview community! Last month, we shared more construction updates for the 12th Ave NW Basin Drainage Improvement project. Since then, construction has continued, and the contractor has completed or made progress on the following tasks:
- Installed a segment of the new drainage system on NW 125th St between 10th Ave NW and 7th Ave NW
- Installed a segment of the new drainage system on the north section of 10th Ave NW, south of 125th St
Throughout the month of November, the contractor plans to work on the following tasks:
- Continue installing the new drainage system on NW 125th St, moving east into the 6th Ave NW intersection, where the newly installed system will be connected to the existing system
- Begin installation of the new drainage system on 11th Ave NW starting at the south end of the project area, west of the playground area
- Continue delivering and staging pipes along 10th Ave NW and 11th Ave NW
- Stage two large water treatment tanks along the northwest corner of NW 122nd St and 10th Ave NW. These tanks will minimize project-related sediment pollution by removing sediment from water used during construction before the water is discharged into the system. We will reach out directly to homes that are near where the tanks will be staged.
Please see the highlighted area on the map below for the work areas.
The underground work, originally expected to be complete by end of year, is now expected to be complete in early 2023. This change in schedule is due to unforeseen delays caused by underground conflicts between the new drainage system and existing pipes. Final paving is weather dependent and planned for early 2023. Work will take place Monday through Friday, from 7am to 4pm.
Map showing underground pipe and conveyance work area
Construction Safety is Everyone’s Job, check out some top safety tips at: www.seattle.gov/utilities/constructionsafety
Natural Drainage System Project Update
The project team is close to reaching 90% design completion on the Natural Drainage System (NDS) project elements. The project team will be reaching out to residents in the immediate project area and will be providing opportunities for the broader community to learn more about the NDS project in the upcoming months.
Looking ahead
We will continue sending monthly email updates with the latest information about the anticipated project schedule, construction progress, and impacts. Please encourage your neighbors to sign up by visiting our project website.
If you live near the Natural Drainage System portion of the project, please keep an eye out for a mailer or email update with opportunities to connect with the project team and learn more about the upcoming NDS construction.
Thank you!
We want to thank you for your patience during construction. We know construction can be disruptive, and we appreciate your understanding as we work to complete this necessary upgrade to your neighborhood’s drainage system. We always strive to make our projects as easy on the community as possible.
As always, if you have a question about the project, please feel free to contact the project manager directly by emailing Wan-Yee Kuo at Wan-Yee.Kuo@seattle.gov
